That's a part of the issue. I'm not sure if this has happened in visual arts, but there is in fact precedent against trying to hire a sound a like over the one you want to sound like. You can't be in talks with Scarlet Johannsen, reject her, and then hire a sound a like and say "talk like Scarlet". It's pretty clear at that point what you want but you didn't want to pay talent for it.
I see elements of that here. Buying copyrighted works not to be exposed and be inspired, nor to utilize the aithor's talents, but to fuel a commercialization of sound-a-likes.